如何从一个位图得到Bitsperpixel [英] how to get Bitsperpixel from a bitmap

问题描述

我有要求我给它从位图的bitsperpixel一个第三方组件。

I have a 3rd party component which requires me to give it the bitsperpixel from a bitmap.

什么让每像素位数的最佳方法是什么？

whats the best way to get "bits per pixel"?

我有一个C＃Windows应用程序，我的出发点是在下面的空格方法： -

I have a c# windows app and my starting point is the following blank method:-

public int GetBitsPerPixelMethod( system.drawing.bitmap bitmap )
{

   //return BitsPerPixel;
}

目前我没有安装，如DirectX或任何东西任何花哨的图书馆的的momement - 但我开放的建议。

At the momement I dont have any fancy librarys installed such as directx or anything - but am open to suggestions.

感谢，
杰森

推荐答案

使用像素格式财产，这返回的PixelFormat枚举它的值可以是FE Format24bppRgb ，这显然是每像素24位，所以你应该能够做这样的事：

Use the Pixelformat property, this returns a Pixelformat enumeration which can have values like f.e. Format24bppRgb, which obviously is 24 bits per pixel, so you should be able to do something like this:

switch(Pixelformat)       
  {
     ...
     case Format8bppIndexed:
        BitsPerPixel = 8;
        break;
     case Format24bppRgb:
        BitsPerPixel = 24;
        break;
     case Format32bppArgb:
     case Format32bppPArgb:
     ...
        BitsPerPixel = 32;
        break;
     default:
        BitsPerPixel = 0;
        break;      
 }

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